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The Complete Guide to Fused Deposition Modeling (FDM) in 3D Printing
FDM 3D printing, short for fused deposition modeling, is an additive manufacturing process that melts and extrudes thermoplastic filament layer by layer to build 3D objects. It is the most accessible and widely used 3D printing technology on the market…
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FDM 3D printing, short for fused deposition modeling, is an additive manufacturing process that melts and extrudes thermoplastic filament layer by layer to build 3D objects. It is the most accessible and widely used 3D printing technology on the market today. This accessibility is fueling massive economic growth: the FDM market is projected to skyrocket from $3.26B in 2026 to $8.37B by 2031, maintaining a robust 20.74% CAGR.
Scott Crump invented and patented FDM in 1989, launching it commercially in 1990 through his company, Stratasys. For years, strict trademark protections meant only Stratasys could legally use the “FDM” moniker. However, the landscape shifted in 2005 with the birth of the open-source RepRap movement. Led by Adrian Bowyer, the team introduced FFF (Fused Filament Fabrication) as a legally unconstrained alternative for the maker community. Ultimately, FDM and FFF describe the identical material extrusion technology, differing only in brand name, not mechanics.
How FDM 3D Printing Works
FDM printing is widely regarded as one of the most fundamental and accessible 3D printing technologies. Here’s the process breakdown:
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